Drill-steel retainer



April 16, 19.29. L. L RlCHARDsQN 1,709,407

DRILL STEEL RETAINER with the hook Patented Apr. 16, 1929.A

UNITEDl STATES PATENT OFFICE.

LED L. RICHARDSON,v .or CLEVELAND', oH'ro,v AssIGNoRITo THE CLEVELAND ROCK vDRILL COMPANY, 0E CLEVELAND, oHIo.

i DRILL-STEEL RETAINER.

Applicationl led 'March 28, 1927.` Serial No. 178,981. i

The present invention is directed t0 improvements in drill steel retainers.

The primary objectof the invention is to provide a device of this character which is extremely simple in construction, eiicient in operation, durable, and which utilizes one of the side rods of the drill to maintain'the f same in its operative position thereon. Another object of the invention is to vide a device of `this kind which will be rugged and can-be easily attached to or removed from the drill, and when inA place thereon will effectively retain the drill steel in its Coupled relation with the drill.

With these and other objects in View, this invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully described, Claimed and illustrated in the accompanyingl drawing, in whichv:- Figure lis aside elevation of a drill equipped with the device.

Figure 2 is a top plan view thereof. Figure 3 is a front view of the device.

Y front head of a drill of the percussive type having oppositely disposed ears theeron in which are formed openings 3. It is in these openings that the side rods 4 are engaged employed for securing the front head to the piston cylinder, not shown. Upon one of these rods is engagedthe usualclamping nut 6, whereas the other rod has threaded thereon a nut 7 circular in cross section and engaged in the longitudinal groove 8 formed in the front head, and while this nut performs the same function as the nut 6 it also serves toV upon the. drill in a manner to be hereinafter explained.

retain `the steel retainer in place This nut has its forward end provided with an integral hook 9, the bill 10 thereof being spaced from the adjacent face thereof a dis- Vtance sufficient to permit the'upperv-portion of the rim of the eye 11 ofthe steelretainer to pass when the retainer is being assembled nature of a frame and consists of angularly disposed I sections 14 and 15, said sections having formedtherein a substantially circular opening 16 and an elongated opening 17,

pro-

9. Theretainer 12 is in the `operatively connected to Lthe head,

respectively, the openings communicating and forming, in effect, akeyshole slot. Y

As shown in Figure 1 the collar 18 of the. drill steel 19 is engaged with the section 15 and owing to the restricted nature of the opening 17 thereof the collar 18 is prevented rom passing therethrough, thus retaining theV steel operatively connected to front head 1 of the drill.

lVhen it is desired toremovethe steel the retainer is swung -to the ldotted thus bringing the circular opening 16 in registrationwith the collar 18, and through which Yit may be withdrawn.'

Itwill be observed upon reference to igextended end of the rod assothe restricted space, thereby positivelyre-` n lined position, as shown' 1n Figure'l of the drawing,v

taining the retainer in its pivoted positioni upon the front head. Referring to the drawing, 1 designates the Y The nut 7 is screwed upon its rod for a limited distance to enable the rim of the eye 11 of the retainer to be engaged upon' the hook 9, after which the nut is further rotated until. terminal of the rod 4. approaches the bill to close the gap therebetween sufficiently to prevent disengagement of the eye from the hook.

From the foregoing it will be observed that the nut 7 not only serves its functionas a side rod nut, but also serves as means for piv- 'otally securing the retainer upon the front head of the drill. j y

What is claimed is 1. The combination with the front head of a drill, lof'a collared drill steel operatively connected therewith, side rods for the drill, one nut engaged on the side rod, a hook carried by the nut for movementtoward or away from the adjacent end of the side rod', and a drill steel retainer pivotally connected to. thehook. e y

2. The combination with a drill front head, of a side rod therefor, a collared drill steel a nut en-v gaged on the side rod, a hook carried by the nut, a drill steel retainer including an eye for retainer, means Vfor pivot-ally connecting the retainer on the nut, Said means being movahle toward and away from the side rod to maint-ain the steel retainer engaged with or permit the disengagement .thereof from said means. l

f nte'stimony whereof `-I affix noyV signature.

` LED L. RICHARDSON. 

